Industrial truck



Felb. M, W23. LMEfiM Y W. SCHROEDER, JR

INDUSTRIAL TRUCK Original Filed Sept. 17, 1921 2 sheets shee b 2 WITH/E88 40 the detailed description on Patented Feb. is, was.

wrnnraiascnnonnnn, or Bant ms, new Yet-air, vassrsnoa To zannvnvon ELEG- tenet v TBIC ivnusrnreL raven-co, or snoonmrn, unwvonn; A coran'rnnnsnir COMPOSEDOF err/renn n .ann nnwann 2e. ronsnunn.

InDiisrnLz-nc Tenor z.

riginal application filed. September 17, 1921, Serial No. 501,287. Divided aud t-his application filed.

time 29, 1922. Serial No. 571,642.

To all whom it? may concern:

Be it known that I, VVILLIAiii Sorrnononn, J12, a citizen of the United States, residing at 312 Lincoln Road, in the borough of 5 Brooklyn, of the city of New York, inthe State of New York, have invented certain new and useful Improvements in Industrial Trucks, of which the followingis a specification,reference bein had to the accompanying drawings, forming a part hereof.

The present application Constitutes a division of application Ser, No. 501,287, filed by the present applicant on September 17,

This invention has for its principal objeet to provide, in; industrial trucks, improved driving mechanism therefor, the propellingmotor being so mounted with respect to the diilferential as to occupy a minimum-space and yet afford a large reduction in gear ratio and a simple adjustment be tween the motor shaft and the finaldrive. More i'iarticularly, the invention is concerned with the provision of a propelling motor whichitself may be pivotally mounted. on

edwith respect to the drive shaft topermit the eflectiveuse of a hllorse chain drive. In accordancewith the invention it is proposed to interpose betweenthe motor casing; and

the differentialhousing a turnbuckle construction by which the angular position of the motor maybe changed as necessary to accommodate the chain. drive This chain drive in association with the final drive for the axle sections gives a double reduction with maximliun' clearance and compactness.

Other features of the invention will appear at greater length in connection with one suitable embodiment ofthe invention as illustrated in the drawings wherein:

Figured. is a view in plan of an improved truck embodying the improvements.

Figure 2 isa view in transverse section through the final drive of the truck. V

Figure 3 is a sectional "view partly in side elevationand partly section oi the elements shown in Figure 2. i The side frame members a of the truck may be supported through springs 72 on the dead axle c which carries the drive wheels (Z.

One feature of the invention is concerned the; housing for the diilerentialnnd adjusttransmission belt shown as a Morse chain f for: engagement with a driven sprocket g on the intermediate drive f shaft g" which is journaled in. the differential housing 0 and hasthereon a pinion g in mesh with the ring gear 72, of the difterential h. Live axle sections 2' extend outwardly from the differ; ential 7i and. en age thedrive wheels (Z, respectively, preiterably through universal joints r to permit angular movement of the drive wheels for reasons which are understood: ,i i y .ln the constructiondescribed it will be apparent that a doulile reduction between the motor a and the differential h is obtained througl'i the sprockets e. g, which may be of different ratios and between the pinion g and the gear h. The use of a transmission. belt or chain such as '7 makes it desirable to provide some means for readily adjusting the distance between the shaft 7' and the motor shaft 0 ,To this end, adjusting devices are rigidly interconnected betweenthe motor casino 0 and the ditl'erential housing; 0 The preferred form of such devices are illustrated. Lugs c are cast on the differential housing: 0 and lugs e in sul'istantial alignment therewith are cast on the motor casing Distance rods 7 which have incorporated intermediate their ends a turnbuckle adjustment k are pivotally connected to the respective lugs 0 By settingrup or hacking oil the turnbuckle the motor cas ng may be swung; about lts pivotal support on the lug; n and the center of port a brake drum by means of which braking stresses may be directly applied to the driving mechanism.

To insure flexibility With yet a sufficient degree of rigidity the drivingeffort through the rear Wheels cl is transmitted from the dead axle 0 through the chassis by means of a torque rod Z which may be connected at one end to the differential housing 0 and at the other end to the chassis. In the illustrated embodiment a ball and socket connection m between the torque rod Z and a truss a is illustrated and such a connection permits angular movement of the torque rod with respect to the frame under the influence of movements of the dead axle 0.

The parts described, it will be observed, are simple and inexpensive to manufacture, easy to assemble and adjust, and tl'i'oroughly efficient in operation providing flexibility in the inter-relation of frame and'drive, with yet sufficient rigidity and stiffness to resist the stresses Which approach a critical point. However, changes in details of construction may be made Without departing from the spirit of the invention provided such modifications fall Within the scope of the ap pended claims.

I claim:

1. In an industrial truck, driving mechanism therefor, including a dead axle, a differential housing thereon, a differential gear supported Within the housing and in driving engagement With live axle sections, a propelling motor pivotally mounted on the differential housing, an adjustable distance rod connected to said motor and to said differential housing and driving mechanism for the differential operatively interposed between said motor and said differential.

, 2. In an industrial truck, driving mechanism therefor including a dead axle, a differential housing formed therein, a differential gear supported in the housing, live axle sections operatively engaged by said gear, a propelling motor mounted pivotally on the differential housing and having a drive shaft, an adjustable connection between the motor and the differential housing to adjust the position of the motor shaft with respect to the differential housing, a final drive shaft operatively geared to said differential gear to afford one reduction in speed and connected operatively with the motor shaft through transmission elements which afford a second reduction in speed.

3. In an industrial truck, driving mechanism therefor including a dead axle having a differential housing, a differential gear mounted therein, live axle sections engaged by the gear, a propelling motor mounted pivotally on the housing and having a propelling shaft carrying a sprocket. a final drive shaft journnled in the differential housing and geared operatively to the ring gear of the differential to afford one reduc tion in speed, a driven sprocket on the end of said last named shaft, a driving chain engaged operatively with both of said sprockets and an adjustable distance rod interposed between the motor and the differential housing to afford an adjustment of the centers of said sprockets.

f. In an industrial truck, driving mechanism therefor including a dead axle having a differential housing, a differential gear mounted therein, live axle sections engaged by the gear, a propelling motor mounted p'ivotally on the housing and having a propelling shaft carrying a sprocket, an intermediate drive shaft journaled in the differential. housing and geared operatively to the ring gear of the differential to afford one reduction in speed, a driven sprocket on one end of said last named shaft, a driving chain engaged operatively with both of said sprockets and an adjustable distance rod interposed between the motor and the differential housing to afford an adjustment of the centers of said sprockets, and a brake drum on the other end of said intermediate drive shaft.

This specification signed this 28th day of June A. D. 1922.

lVILLIAM SCHROEDER, JR. 

